Hutchison last pitched June 15 when he left after only two-thirds of an inning because of elbow discomfort. That injury came just two days after fellow starter Kyle Drabek left his outing because of elbow soreness. Drabek had Tommy John surgery just a few days later.

In 11 starts this season, Hutchison was 5-3 with a 4.60 ERA. He struck out 49 batters in 58 2/3 innings.

Because of the injuries to Hutchison, Drabek and righthander Brandon Morrow (oblique), Toronto has used 10 starting pitchers this season. Tonight, J.A. Happ will become the 11th. Another starter, Dustin McGowan, has missed the entire season and will have shoulder surgery Thursday.